a.\(n_{Zn}=\dfrac{m}{M}=\dfrac{23}{65}=0,35mol\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
0,35 0,35 ( mol )
\(V_{H_2}=n.22,4=0,35.22,4=7,84l\)
b.\(n_{CuO}=\dfrac{m}{M}=\dfrac{6}{80}=0,075mol\)
\(CuO+H_2\rightarrow\left(t^o\right)Cu+H_2O\)
0,075 < 0,35 ( mol )
0,075 0,075 ( mol )
\(m_{Cu}=n.M=0,075.64=4,8g\)